2RU1:
reference: Central cell-derived peptides regulate early embryo patterning in flowering plants., Costa LM, Marshall E, Tesfaye M, Silverstein KA, Mori M, Umetsu Y, Otterbach SL, Papareddy R, Dickinson HG, Boutiller K, VandenBosch KA, Ohki S, Gutierrez-Marcos JF, Science. 2014 Apr 11;344(6180):168-72. doi: 10.1126/science.1243005. PMID: 24723605

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